U+014C "Ō" Latin Capital Letter O with Macron Unicode Character
Unicode Version 17.0
Ō
U+014C "Ō" Latin Capital Letter O with Macron is a vowel used in several languages, including Māori, Latvian, and the romanization of Japanese, where the macron diacritic indicates a long or extended pronunciation of the letter "O." It is encoded in the Latin Extended-A block of Unicode, distinct from using a standalone combining macron, and is essential for accurate orthography in languages where vowel length changes meaning, such as distinguishing between distinct words in Māori. This character appears in digital text across computing platforms, requiring proper font support to display the macron centered above the O.
General Properties
| Code Point | U+014C |
| Version Added | 1.1 |
| Name | Latin Capital Letter O with Macron |
| Unicode 1.0 Name | Latin Capital Letter O Macron |
| Block | Latin Extended-A |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "O" U+004F Latin Capital Letter O "̄" U+0304 Combining Macron |
Encodings
| HTML Decimal Encoding | Ō |
| HTML Hex Encoding | Ō |
| UTF-8 Encoding | 0xC5 0x8C |
| UTF-16 Encoding | 0x014C |
| UTF-32 Encoding | 0x0000014C |
| C/C++/Java Escape | \u014c |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ō" U+014D Latin Small Letter O with Macron |
| Lowercase Code Point | "ō" U+014D Latin Small Letter O with Macron |
| Simple Case Folding | "ō" U+014D Latin Small Letter O with Macron |
| Case Folding | "ō" U+014D Latin Small Letter O with Macron |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ō" U+014D Latin Small Letter O with Macron |
| NFKC Simple Casefold | "ō" U+014D Latin Small Letter O with Macron |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Upper |